Jens schmackelsen



(No Model.)

J. SCHMACKELSEN.

i FOUNTAIN PEN.v No.. 364.772. Patented June 14, 1887.

' yconstruction is simplified.

NITED STATES 'PATENT I Prien..

LIENS SCHMACKELSEN, OF ALTONA, PRUSSIA, GERMANY.

FoUNTAlNPEN.

SPECIFICATION formingpart of Letters Patent No. 364,772, dated June 14.,1887.

. Application filed March 12, 1887, Serial No. 230,577. (No model.)

To @ZZ whom it may concern.-

Beit known that I, JENs SoI-IMAoKnLsEN, of Altona, in the Klingdom of'Prussia and Empire of Germany, haveinvented a new and useful Improvementin Fountain-Pens, of which the following is a specification, referencebeing had to the accompanying drawings.

This invention relates to that class of fountain-pens in which there isarranged between the reservoir and the pen-holder a flexible tube,'which forms between the reservoir and the pen Within the holder aiiexible conduit, through which ink is forced to the pen by the pressureof the lingers in writing.

The improvement consists in a novel combination of parts, hereinafterdescribed and claimed, in such a fountain-pen, whereby its The inventionis illustrated by the aceon1 panying sheet of drawings, in which' Figurel represents in perspective an outside view of the pen or holder whilein use.- Fig. 2 is a longitudinal View, partlyin section; andfFig. 3, across-section through that part of the pen held by the finger ends whilewriting.

`The upper part, A, ofthe holder contains the reservoir for receptionofthe ink. To thelower end of this part A is attached an elastic tube,e, made of india-rubber or other suitable yielding material. The freeend of this tube c is furnished with a ring or socket, d, for receptionof pen f. Inside of tube e, and between A and d, is a central body, m,made of wood,

ebonite, or other material not destructible by .the iniiuence of ink.This body m is a mere straight rod or stick without any internal chamberor passage, and of so much smaller diameter than the tube e that a freespace remains between said body and tube, and the said body is kept inposition within the tube by two or more circular enlargements, i and t',provided on its exterior. The end of the body m passes through the ringd, as will be under stood by reference to Fig. 2 of the drawings, and itleaves a free annular space between itself and ring d, so that the twoconstitute a holder for the pen f. The enlargements i and t" are eachfurnished with one or more'very not shown in the drawings.

yhand of the personusing the pen.

small holes or grooves, r, so that ink can pass arrangement well knownfor this purpose in fountainpens. This part being common, it is The penwhen in use is held by the writer in the usual manner,

as shown in Fig. l, and the pressure of the e fingers which is exertedupon the elastic tube e, and which while writing involuntarily changesin strength and ceases during moments of rest, causes a portion of theink accumulated between b'ody m and tube e to be forcedv to the pen tofeed the latter through the annular space between the central body, m,and the ring d. The size of holes r must be in a certain proportion tothe annular free space leading the ink to pen f to regulate the feed.These openings must also be made in proportion relative to the lighteror heavier In the beforedeseribed Vvmanner, after once having broughtthe pen into action the writer himself produces a regulated feeding ofthe pen by the involuntary changes of pressure of the fingers keepingthe pen exerted to the elastic part e.

What I claim as myinvention, and desire to secure by Letters Patent, is

The combination of the reservoir A, the flexible tube e, attachedthereto, the central body, m, consisting of a rod or stick extend ingthrough said tube and having perforated or grooved enlargements i forthe support of said tube, and the ring attached to the front end of thesaid tube and surrounding the said body, with an annular space betweenit and said body to forni both the holder for the pen and a passage forconducting the ink to the latter, substantially as herein described.

J ENS SCHMACKELSEN.

